Obsecure problem 1

[pascal111]

On Sunday, 31 July 2022 at 17:03:59 UTC, Salih Dincer wrote:
> On Sunday, 31 July 2022 at 15:01:21 UTC, pascal111 wrote:
>> 
>> I don't know how "assert" works, if you explained it I'll be 
>> able to get the idea of your suggestion to apply the 
>> appropriate changes on my code.
>
> **// This code runs forever:**
> ```d
>   string str;
>   assert(str is null);
>
>   str = "test";
>   assert(str !is null);
>   assert(str.length >= 1);
>
>   str = "";
>   assert(str !is null);
>   assert(str.length == 0);
>
>   int count;
>   assert(count == 0); // true
>
>   assert(true);
>   while(true) { // endless loop }
>
> ```
>
>
> **// This code runs in a little bit:**
> ```d
>   count = 100;
>   //assert(count); /* or:
>   assert(count > 1); //*/
>
>   while(--count) { }
>   assert(count); // false and assert error
>
> ```
>
>
You got the attention by the good understanding of D grammar. I 
think I got the idea of "assert".
> SDB at 79